Holographic Interferometric Fringe Analysis and Measurements of Controlled Surface Displacements.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
Pagination or Media Count:
Piezoelectric transducers were used to control small displacements of a diffusely reflecting surface. Using double exposure and real time holographic techniques, the relationship between the surface motion and resulting interference fringe patterns was studied. The extent of the surface displacement was measured from the two and three dimensional nature of the interference fringes. The interferometric results were correlated with the actual displacements. The results indicate that holographic interferometry can be used as a practical method to obtain deformations of three dimensional objects and that piezoelectric transducers are an effective aid for the study of holographic interferometry. Author
- Lasers and Masers
- Test Facilities, Equipment and Methods